Can TimeCapsule recognize a Uninterrupted Power Supply (UPS) on its USB port for safe planned shut-down of the hard drive in case of mains power failure?

I don't trust any hard drive not being on a UPS or battery backup of some kind, and since Time Capsule has a USB port and most batteries (APC at least) have USB cables for "parachute" safe shutdown, I would like to think Apple recognized this and included support for it in the Airport Admin software for the TC._________________